Mikey,
WAS 5 only supported J2EE 1.3. WAS 6 was the first version that supported 1.4. Versions 5 & 6 are quite similar from the server and admin console point of view.
> IBM WebSphere: Deployment and Advanced Configuration by Roland Barcia.
I own this book. It's really good. It is written for WAS 5, but I would still recommend it. The book is the third in a series. The series is meant for developers and admins so things are written from the perspective of both. The first book in this series (Enterprise
Java Programming with IBM WebSphere - Kyle Brown's book) is even more developer oriented. Kyle's book is more about the
IDE though, which has changed since version 5.
I think you would like #2 (Roland Barcia's book)